Newland Limestone  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Mesoproterozoic
 ....Newland Limestone
RTIdaho
 Montana
 Belt Supergroup
 Wallace Formation
SNIn Piegan Group of Belt Supergroup. Idaho and W central Montana. In central and western Montana, Newland and Wallace formations have been treated as essentially synonymous terms by some authors. Added to Thesaurus in 1989.